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Standing Flexion Test

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Other Names

  • Standing Forward Flexion Test


Demonstration of the Standing Flexion Test[1]


  • The patient is standing
  • The examiner palpates the affected sides PSIS and also on the S2 spinous process
  • The patient is asked to bend forward
  • The hands are then switched and repeated on the opposite side
  • Positive Test
    • Occurs when one PSIS is noted to move in the superior direction more than the other



  • Sacroiliac Dysfunction
    • Sensitivity: 17%[2]
    • Specificity: 79%

See Also


  1. von Heymann, Wolfgang, Horst Moll, and Geraldine Rauch. "Study on sacroiliac joint diagnostics." Manuelle Medizin 56 (2018): 239-248.
  2. Levangie PK. Four clinical tests of sacroiliac joint dysfunction: the association of test results with innominate torsion among patients with and without low back pain. Phys Ther. 1999 Nov;79(11):1043-57. PubMed PMID: 10534797.
Created by:
John Kiel on 11 August 2019 23:05:30
Last edited:
23 May 2023 17:06:22